Lung cancer, also known as primary bronchogenic carcinoma, is the most common malignant tumor of the lungs originating the mucosa or glands of the trachea and bronchi. According to the histopathological characteristics, it is mainly divided into non-small cell carcinoma (includingenocarcinoma and squamous cell carcinoma) and small cell carcinoma. Lung cancer is not contagious, but it has a significant family aggregation and genetic susceptibility Smoking, occupational exposure, air pollution and so on are all common causes. Worldwide, the incidence and mortality of lung cancer are extremely high and on the rise, and the and mortality of lung cancer in men rank first among malignant tumors. The clinical symptoms of lung cancer are closely related to the size, type, stage of development, location, and metastasis of the tumor. Common symptoms include cough, hemoptysis, wheezing, chest pain and so on. In the early stage of the disease, there be no obvious symptoms, and some patients are accidentally found during physical examination.

For the treatment of lung cancer, common approaches include surgery, radiotherapy, and chemotherapy. The prognosis of this disease varies depending on the patient's, such as tumor type, tumor staging, age, gender, etc., but overall, the five-year survival rate for lung cancer is not high. In terms of prevention control, prevention through measures such as reducing smoking, avoiding occupational and environmental exposure, and regular health checks is key. With the development and in-depth research of bi technology, there have been greater advances in the understanding of the causes of lung cancer and diagnostic and treatment methods. For example, genetic testing that detects EGFR gene mutations, AL and ROS1 gene fusions, etc., facilitates personalized targeted therapy. Also, early screening for lung cancer, such as the development and application of low-dose spiral, is of great significance for improving the early diagnosis rate of lung cancer and improving patient survival quality.